Do not index
Why has your LinkedIn reach dropped 40, 50, sometimes 70 percent in the last quarter, even though you are posting the same way you always did? Because the platform stopped ranking content the way you think it does.
LinkedIn replaced its entire feed ranking system with a 150-billion-parameter AI model called 360Brew, and the model does not care about your likes. It reads what AuthoredUp called your topic DNA, which is the cumulative signal of what you have written about, who has dwelled on your posts, and what gets saved instead of liked. Median reach dropped 47 percent year-over-year. Video reach fell 72 percent. Posts with three or more hashtags lost 70 percent of their reach. If your profile and your posts do not point at the same thing, 360Brew is suppressing you and you have no way to see it from the dashboard.
The opinionated answer is this. You will not fix your reach by posting more, posting video, or copying whoever just went viral. You will fix your reach by passing the Topic DNA Rule, which I will name explicitly below.
This article is written for founders running personal-brand content between 5,000 and 50,000 followers, ghostwriters who charge $5k to $30k per month per client, and agency owners between $200k and $2M in revenue who are watching client retainers wobble because the dashboards stopped looking the way they used to. If you are running a corporate brand page and hoping it carries you on LinkedIn, this article will not change your model. Skip it. If you are still measuring success by likes per post and refusing to look at saves and dwell time, this article will not change your model either.
The Topic DNA Rule
What I call the Topic DNA Rule is a single test you can run on your own profile in under five minutes. Open your last sixty days of posts. Write down the three topics you actually wrote about. Now open your profile headline, your about section, and your featured posts. Write down the three topics those say you are about. If those two lists do not overlap by at least two out of three, 360Brew is reading your account as topically incoherent, and it is splitting your reach across audiences that do not stay long enough on any single post to register dwell time.
The thing most creators do when reach drops is rotate topics. They post a leadership take on Monday, an AI hot take on Tuesday, a personal story on Wednesday, and a hiring tip on Thursday. In the old algorithm, that variety kept the feed fresh. Under 360Brew, that variety reads as low confidence, and the model deprioritizes accounts that cannot demonstrate 60 to 90 days of consistent topic authority on a narrow surface. AuthoredUp put it bluntly. A post with 200 saves now dramatically outperforms one with 1,000 likes, because saves and dwell time are the only inputs the model trusts.
The fix is narrower than it sounds. Pick one topic. Write about it for ninety days. Update your headline so anyone landing on your profile within ten seconds of reading a post can verify the match. Watch what happens to saves, not likes, and use saves as your only leading indicator for the next sixty days.
What changes for the people selling LinkedIn services
Here is what this looks like operationally for the agencies and ghostwriters I work with. If a client has been on a retainer for more than six months and their posts cover four or more topics with no clear spine, that account is bleeding reach right now, and your dashboard is not going to show it the way you are used to. The client will see the drop. They will assume you stopped working hard. The truth is that the model changed, and the strategy that worked in 2024 actively hurts performance under 360Brew. If you measure outcomes using the right signals, you can see this coming before the client does, which is the difference between renewing and getting churned. I broke this down in more detail in a piece on what to actually measure on LinkedIn now.
The second change is profile work. Most agencies treat the profile as a one-time onboarding task. Under 360Brew the profile is now part of the algorithm. It is no longer a static landing page. If you have a three person agency capacity, the highest leverage hour of work you can do on any new account is a topic alignment pass before you write a single post. Headline, about section, featured posts, all pointed at the one topic the client is going to own for the next quarter. Skip that hour, and the first ninety days of content fights the algorithm instead of compounding with it.
The reach drop is real. The 47 percent median is not noise. It is the entire industry recalibrating in public. The accounts that come out of this period stronger will not be the ones who posted more video or chased the latest hook formula. They will be the ones who narrowed their topic, aligned their profile, and let saves replace likes as the metric they manage to. Most creators will not do this work. They will keep rotating topics, keep watching reach drop, keep blaming the algorithm. That gap is the opportunity. Topic authority is the only durable advantage left on the platform, and the next 90 days are when the people who take it seriously pull permanently ahead of the people who do not.
